MongoDB C++ Driver  legacy-1.1.2
dbclientcursorshimtransform.h
1 /* Copyright 2014 MongoDB Inc.
2  *
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  * http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #pragma once
17 
18 #include "mongo/client/dbclientcursorshim.h"
19 #include "mongo/stdx/functional.h"
20 
21 namespace mongo {
22 
23 class DBClientCursor;
24 
30 public:
32  DBClientCursor& c,
33  const stdx::function<bool(const BSONObj& input, BSONObj* output)>& transformation);
34 
35  virtual BSONObj next();
36  virtual bool more();
37 
38 private:
39  DBClientCursor& cursor;
40  stdx::function<bool(const BSONObj&, BSONObj*)> transformation;
41  BSONObj nextDoc;
42 };
43 
44 } // namespace mongo
DBClientCursorShim provides an abstract interface for providing polymorphic cursors.
Definition: dbclientcursorshim.h:27
Utility functions for parsing numbers from strings.
Definition: compare_numbers.h:20
Queries return a cursor object.
Definition: dbclientcursor.h:49
DBClientCursorShimTransform implements the shim interface over a cursor reply document by allowing a ...
Definition: dbclientcursorshimtransform.h:29
C++ representation of a "BSON" object – that is, an extended JSON-style object in a binary represent...
Definition: bsonobj.h:78